Algorithmic and Process Control-high performance JavaScript

Summarize:

1.for, while, Do-while loop performance is comparable, and no one loop type is significantly faster than or full of other types.

2. Avoid using the for-in loop unless you want to traverse an object with an unknown number of attributes.

3. The best way to improve cycle performance is to reduce the number of operations per iteration and reduce the frequency of iteration iterations.

4. Switch is always faster than if-else, but always the best way

5. When judging more conditions, use the query table faster than If-else and switch

6. The browser's call stack limits the use of recursive algorithms in JavaScript, and stack overflows can cause other code outages

7. If you encounter a stack overflow error, you can change to an iterative algorithm.

Algorithmic and Process Control-high performance JavaScript